Paper-feeding machine



No Model.) 5 ShetsShet 1.

" T. G. DEXTER.

I PAPER FEEDING MACHINE. v I No. 605,088. Patented Juna'7,1898

WITNESSES: R INVENTOR fiw wa J fl m' v I @w;

ATTOR N EY 7 (No Model.) 7 i 5 Sheets-Sheet 2..

v DU-DEXTER.-

1 PAPER FEEDING MAGHINE.

N0. 605,%8- Patented Jun' 7, 189.8.

. wnN ssksj h IIN VENTOR ATTORNEY Y 5 sheetssh eet 5.

f c; 11 XTBR; 'PAPER FEEDING MACHINE.

; mf605m88. Patentgd June 7, 1898..

' the machine in cafsetwo or, more sheets are ing device for actuating the automatic clutch,

citizen of the United States, residing atPearl -River, 'countyof Rockland, Stateof New f mj-Ef TALBOT c. nEX'T aoE] PEARL RIVER, NEW YORK.

1 MACHINE- J srEcIFIcA-monarmin part' of Letters Patent No. 605,088, dated June 7, 1898.

I Application filed hprulv, 1897.

Toctllwhoin it may concern:

Be it known that I,- TALBoTjC. DEXTER, a

York, have invented certain, new and useful Improvements in Automatic Throw-Out and Stop Mechanism-forPaper-Feedin g Machines, of whichthe following is a specification.

In Patent No. 567,302, granted to me September 8, 1896, for automatic stop-motion device, and application for .patent filediby me December 28, .1896,- Serial No.1 617,263, for: improvements :idpaber-feedihg machines, I

vices, certain improvements 'in .mechanisms for automatically arresting the operation of simultaneously fed;forward by theffeeding instruments,said mechanisms comprising in both of the above-named cases an automatic clutch adapted to disen gage the machine from the power-shaft and positively arrest itsmovement and an electric sheet-calipering device actuated by the thickness of two or more sheets of paper,and.su-itably connected with the au-1 tomatic clutch for actuating it and causing it to throw the machine out of operation.

My present invention relates "to improve ments in the automatic throw-outandstop mechanisms above referred to and it consists mainly of novel features in the sheet-caliper,

and incidentally to a novel arrangement or' combination of devices for improving the operation of the automatic clutch to render it quick and sure.

In order that my invention maybe fully understood, I will first describe, the same in connection with the accompanying drawings and afterward point out the novelty with more particularity in the annexed claims.-

In saiddrawings, Figure 1, is a detail plan view of one corner of a paper-feeding machine embodying my improvements. Fig. 2 is a detail front perspective view of the main driving-gear, and attached automatic clutch and stop mechanism. Fig.3 isadetail sectional side elevatiori of the clutch-operating mechanism and; the, controlling electric trip. Fig. 4 is a detail perspective view of the adjustable automatic calipering device which controls the electric trip of the clutch-operating Serial 110.632.629. (No model.)

-mechanism. Fig. 5 is a similar View of a slightly-modified form of thesame device.

'I have represented my improvements as applied to the paper-feeding machine covered by my above-named application, Serial No.

invention. have described and claimed; among other de- 1, 2, 3, and 452 indicate parts of the feederframe. V

115 represents the main power-shaft of the machine, said shaft extending transversely across the machine'above the delivery end and operating all the feeding mechanisms through suitable connections.

If more than one sheet of paper passes from the feeding-machine, it is necessary to'arrest the movements of the several mechanisms till the error can be corrected. In the path of the sheets a sheet-calipering detecting Zdevice is arranged and suitably connected tothe clutchoperating mechanism to throw..lthe clutch when more than the proper number of sheets pass. I will proceedto describe'this mechanism, first. referring to f the-automatic. clutch and then to the'automaticfsheeifioalipering .d'evicef which controls the saineLt Looselyjournaled -upon the outer end of the main driving-shaft llo is a large power-gear 320, which has secured to it or formed integral with it a clutch-disk 321, having a'radial notch 322. Keyed to the outer end' of the shaft 115, adjacent to the clutch-disk 321, is a similar disk 323, secured by means of a key 324 and formed with a radial notch 325. Pivoted .upon a pin 326, supported in the lug 326,

projecting from and formed integral with the aforesaid clutch-disk 323, isa clutch-dog 327, having an engaging tooth 32.8, which is adapted to engage in the radialnotches 322 and'325 of the clutch-disks when said'notches register or correspond in position.

329 is a pin projecting from'one's'ideofthe dog 327, and 330 is a rod pivoted to pin 329 and projecting through a guide-lug 331, projecting from the disk 323.

- 332 is a spiral spring confined upon therod 330 between the lug S31 and collar 000 for holding the dog 327 against the peripheries of the clutch-disks and forcing the tooth 328 into the notches 822 325 when they assume proper position.

331tis ahead or enlarged lug formed integral with the clutch-disk 336 is a heel portion formed integral with the clutch-dog 327, said heel portion projecting over the enlarged lug or head 33a into the plane of the disk 323 in position to be engaged by head 339, hereinafter referred to, which head can be moved into the path of heel 336 (for disengaging the clutch-dog 327) and head S B-t to arrest the motion of the machine.

337 is a bracket secured to the side framebar 1, and 3-38 is a pin supported upon said bracket.

2-339 is a sliding head having two arms 339 and 339" projecting from it and sliding upon pin 33S and provided with a guide-strap 3&0 on the arm 3359, which embraces a guide-pin 3M, projecting from the main frame.

3 2 is a rock-shaft journaled in bearings 31 3 of the main frame, and 3-H is a rock-arm secured to one end of the shaft 312 by means of set-screw The lower end of the rockarm 3-H is forked or bifurcated at 346 to engage the arm 339 of the sliding head 339.

397 is one of a pair of rock-arms, and T00 is a shaft journaled in bearing 399 and carrying drop-rollers 102.

40st are rock-arms suitably connected with rock-arms 397 and carrying an antifrictionroll 4:05 at their upper ends, which operates upon the periphery of a cam -t06, which is keyed to the shaft 115 inside of the bearing 115" of the main frame.

417 is a transverse rock-shaft having handlcvers 1'17" and geared to the rock-shaft 3&2 by means of bevel-gears .419 and 420. Keyed to the rock-shaft -il7 is a rock-arm 41G, from which extends a rod 4-15, which is connected in any suitable manner to a device for holding the drop-rollers in elevated inoperative position when the machine is not running.

The mechanism so far described is fully illustrated and explained in my application, Serial No. 617,263, above referred to, and will be more fully understood by carefully examining said application.

Projecting up from the shaft $17 is a rockarm 25, which is pivoted at 2 3 to the downturned end 27 of the 'bar 27, which is movably supported at its opposite end by means of a slot 27, cut in the bar and working upon or engaging a pin 28 in the upper end of the plate or casting 29, which is secured to the frame-piece Pivoted upon a pin 35 is a dog or detent 36, having a heel 36, from which extends a spiral spring 37 to an eyebolt 338, secured in the flange or inbent portion 39 of the bar 27. .Tournaled upon a pin a0 is a dog 41, having a hook end i1, adapted to engage the heel 36 of the dog 30. The dog &1 carries an armature 4-2, which rests adjacent to the electromagnet 4-3, which is mounted upon a bracket 44:, adjustably secured to the bar 27. The spiral spring 45 tends to hold the armature 42 away from the magnet and the hook t1 into engagement with heel 36 for keeping the dog or detent 36 out of engagement with the clutch-operating bar, which I will now describe.

Keyed to the main power-shaft 1.15 is an oval-shaped cam 00, and supported loosely upon the shaft to one side of said cam is a guide-loop 61, formed integral with a constantly-reciprocating bar 2, which extends forwardly and rceiprocates freely in the guideframe 03. Journaled upon a pin 64: at one end of guide-loop 61 is an antifriction-roller (55, which operates upon the periphery of cam 60, the bar 62 being held yieldingly toward the cam bya suitable spring. (Not shown.) Formed on the upper edge or face of the bar 02 is a notch or shoulder 70, having an inclined face 71, and to the rear of shoulder is a cam-lug 72. The bar 62 operates directly beneath the dog or detent 3 and should the eleetromagnet be energized the dog 41 will release detent 36, which latter is forced into engagement with shoulder '70, which will cause the bar 27 to be moved forward for rocking shaft 117 and shifting the clutch of the machine. As the bar (32 is moved back after shifting the clutch the detent 36 will ride on cam 72 and throw heel 36 into engagement with hook -11 of dog i1, providing, of course, the magnet 43 has become deenergized by the return to normal. position of the controlling sheet-calipering device.

I will now proceed to describe the automatic sheet-calipering device which throws into play the mechanism above described for shifting the clutch and arresting the movement of the machine when two or more sheets are fed simultaneously from the machine.

To properly caliper the passing sheets of paper and detect the presence of more than one sheet, it is essential that the device be free to move under the pressure of an unusual thickness of sheets and at the same time be capable of a very fine adjustment which will. not be interfered with by the vibrations of the machine. To accomplish this, I propose tohave the upper movable calipering member vertically adjustable upon an arm or frame which is rigidly connected with or is an integral part of the support for the lower stationary member, said movable member being capable of horizontal sliding movement under the action of the moving sheets for completing an electric circuit to a clutch-controlling device. The sheet calipering or detecting device is preferably located at the delivery end of the feeding-machine, so that the presence of more than one sheet passing from the feeder will be immediately detected and the machine stopped before the two or more sheets are fed into the folder or printing-press and destroyed.

Mounted upon the machine-frame piece IIO . :eoaoss is 452 is a U-shaped frame or yoke 100, having a supporting arm or base 101 adjustably secured .to the machine-frame in any suitable manner. (Not shown.)

102 is the lower stationary member of the calipering device, comprising a smooth bar -12] 129 extends'to a battery 130, and from thence and 106 is a vertically-extending bracket securedto arm-105 and having an elongated horizontal flange 'or plate 107, in which is formed a longitudinally-extending slot 108. The upper movable member of the calipering device comprises a plate 110, having a lower smooth face,rand a post 111, extending up from its upper face. I

112 is an adjustable supporting-screw passing through the slot 108 of flange 107 and engaging a threaded openinginthe upper end of postlllfor slidin'glysupportingplate 110 in any adjusted position'with 'relationto'the' plate 102.: .Upon the screw 112 is a clampnut, 113 for securing the screw in adjusted position; Projecting rearwardly from the platef110 is an integral arm 115 which has a bifurcated end.116 supporting the journalscrews1l7, which pivotally engage the lower end 118 of the lever 119. The lever 119 is pivoted: at, 120, between integral lugs of any arm 121, extending from and forming an in- -tegral part of the-short-carm 105 of the U- shaped yoke,100.- Extending from lever 119 below the pivot. 120 is an arm 122, supporting a small adjustable weight 123. Attached to. the upper end of lever 119 is a contact-spring 125, which may. be brought into electric con-' tact with an adjustable electric terminal 126, supported, in an insulated bearing 127 .of a

bracket-arm 128, forming'con tinuation-of arm From the contact 126 the circuit-wire the wire 131 leadsto the magnet 43. A short wire.132 connects the other terminal of the magnet to the machine-frame, through whichthe circuit. is completed to the contact-lever 119. movement bya screw-stop 133, seated in a threaded opening of the flange 134 of bracket-.v arm.128. An arm 135 extends forwardlyfrom arm 105 and. is provided with a journal-pin 136, upon which is freely journaled a curved .guide-plate137, which rests freely upon the rear endof the plate 102, with its end adjacent to the calipering-plate 110.

Itwill'be observed that thesheets .of. pape fed from the :machine have. their forward edges guided under, the calipering-plate 110. by the curved guide-plate 137. Theplate 110 r is supported byscrew 112 just far. enough above the plate 102 to allow asingle sheet to pass freely between them. If two sheets pass.

The lever 119 is limited in its backward.

slotted plate 107) to allow the two sheets to pass; but the friction caused by the thickness of the extra sheet will be sufficient to cause the plate 110 to move with the paper a short distance, the screw 112 sliding in slot 108 to allow this movement. The movement of plate 110 with the paper rocks the lever 119 and makes contact between spring 125 and terminal 126, thereby energizing magnet 43, which attracts armature 42 and allows detent 36 to engage shoulder and'thereby operate the rock-shaft 417 for throwing the clutch out of gear and arresting the motion of the machine.

The specific structure and operation of the clutch are immaterial to the present invention and are not more fully referred to.,

In Fig. 5 I have shown the sheet-calipering device with a detecting wheel or roller in additiont'o the plate 110. The plate 110 in. this form is provided with a lug or post 111,correspondingrwithpost 111, and between posts 111 and 111, is formed a slot 110. Journaled upon suitable bearings 5141 in post 111 and 111 is the detecting-wheel 140, having its periphery projecting through the slot 110 a little below, the under surface of plate, 110. The roller 140 has a small block 142 of soft rubber set in a segmental notch cut in its periphery and a pin 143 projecting from one faceto limit its movement. The cut-out portion of the roller reduces its weight on that side of: its center and causes it to rest norwith post 111 and the rubber block 142 into I frictional engagement with the paper. The

continued movement of the paper moves plate forward and makes the electric contact between spring 125and-terminal 126. The rubber block also has a retarding action upon the passing sheets. i

It will be observed that the movementof the calipering-plate for making the electric contact is in a horizontal, plane in the direc-, tion in which the sheets travel, whereas-the calipering-plate is adjusted vertically with relation to the stationary plate for detecting by the thickness the passage of more than i one sheetand is at the same time free to move verticallytoaccommodate the extra thickness.

' I am aware that it has been proposed to providethrow-outor stop mechanisms for paperfeedingmachines with a rotativeor pivoted sheet-gaging member supported adjacent to ,the plane of movement of the sheets and capable of being moved on its pivot by the passing sheets for actuating'the throw-out or stop mechanism. 1 1 am also aware that it has been proposed to arrange the gaging member of such mechanisms to move perpendicularly to the plane of movement of the sheets when an extra thickness of sheets passes, and I therefore disclaim such structures in this application.

In my improved form of sheet gaging or calipering mechanism I arrange the sheetcalipering clutch-controllin g member to move bodily or slide in a plane parallel with the plane of feed of the sheets, and there is practically no limit to the length of stroke which can be imparted to this member and the connected parts, so that the mechanism can be rendered entirely independent of the vibrations of the feeding-machine.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

1. The combination, in a paper-feeding machine, with an automatic clutch mechanism constructed to throw the machine out of operation, of a sheet-calipering clutch-eontrolling device comprising an electromagnetic trip mechanism a lower stationary calipering member over which the sheets pass, an upper adj ustably-supported sliding calipering member supported over the stationary member and capable of moving in a plane parallel with and in the direction of travel of the sheets and an electric contact device comprising a contact-point, and a contact-lever connected with the sliding calipering member, the contact point and lever being in circuit with the electromagnetic trip mechanism, substantially as set forth.

2. The combination, in a paper-feeding machine, with an automatic clutch mechanism constructed to throw the machine out of operation, of a sheet-calipering clutch-controlling device comprising an electromagnetic trip mechanism, a lower stationary calipering member over which the sheets pass, an upper adj ustably-su pported calipering member supported over the stationary member and capable of moving in the direction of travel of the sheets, an arm extending from the movable calipering member, and an electric contact device in circuit with the electromagnetic trip mechanism and comprising a contact-lever extending transversely to the line of movement of the sheets and pivotally connected with the arm of the movable calipering member, and a contact-point with which the lever is brought into contact by the movement of the calipering member, substantially as set forth.

3. The combination, in a paper-feeding machine, with an automatic clutch mechanism constructed to throw the machine out of operation, of a sheet-calipering clutch-controlling device comprising an electromagnetic trip mechanism, a lower stationary calipering member over which the sheets pass, an upper adjustably-supported calipering member supported over the stationary member and capable of moving in the direction of travel of the sheets and an electric contact device in circuit with the electromagnetic trip mechanism comprising a contact-point, a contact-lever connected with the movable calipering member, and a weighted arm extending from the contact-lever and arranged to hold the parts in normal position, substantially as set forth.

it. The combination, in a paper-feedin g machine, with an automatic clutch mechanism constructed to throw the machine out of operation, of a sheet-calipering clutch-controlling device comprising a lower stationary plate over which the sheets pass, a rigidlysupported slotted plate above the stationary plate, a movable calipering member, a pin or screw passing through the slotted plate and engaging the movable caliperin g member and supporting it in proper relation to the stationary plate, and means connected with the movable calipering member for tripping the clutch mechanism, substantially as set forth.

5. The combination, in a paper-feeding machine, With an automatic clutch mechanism constructed to throw the machine out of operation, of a sheet-calipering clutch-controlling device comprising a lower stationary plate over which the sheets pass, a calipering-wheel journaled in a movable support above the stationary plate, means for adjusting the movable support for regulating the distance between the periphery of the wheel and the stationary plate, means of engagement between the wheel and its support to arrest the rotation of the wheel and cause the support to move, and means opcratively connecting the movable support with the trip mechanism of the clutch, substantially as set forth.

6. The combination, in a paper-feeding machine, with an automatic clutch mechanism constructed to throw the machine out of operation, of a sheetcalipering clutch-controlling device comprising a lower stationary plate over which the sheets pass, a vertically-adjustable calipering-plate supported above the stationary plate and arranged to move with the sheets, means connecting the movable calipering-plate to the clutch mechanism, a friction-wheel freely journaled upon the plate with its periphery projecting below the lower face, and a stop device adapted to arrest the rotation of the wheel and cause the calipering-plate to move with the sheets, as set forth.

7. The combination, in apaper-feeding machine, with an automatic clutch mechanism constructed to throw the machine out of operation, of a sheet-calipering clutch-controlling device comprisinga lower stationary plate I lugswith its periphery projecting through adjustable calipering-plate supported above said slot below the under surface of the plate, and a pin extending from one face of the wheel and adapted to engage one of the posts or lugs, substantially as and for the purpose set forth.

8. The combination, in a paper-feedingmachine, with an automatic clutch mechanism constructed to throw the machine out of operation, of a sheet-calipering clutch-controlling device comprising a lower stationary plate over which the sheets pass, a verticallythe stationary plate and arranged to move with the sheets, means connecting the movable calipering-plate to the clutch mechanism, posts or lugs on the calipering-plate, a slot in the plate between the lugs or posts, a

' friction-wheel journaled between said posts stantly-reciprocating driving-rod operatively connected with the machine and-formed with a detent-shoulder, a bar connected with the rock-shaft, a detent pivoted to said bar and adapted to engage the shoulder of the driving-rod, and an electromagnetic trip device under the control of the calipering device, and adapted to hold the detent out of engagement with the driving-rod, substantially as set forth.

10. The combination,in a paper-feeding machine, with an automatic clutch mechanism constructed to throw the machine out of operation, of a sheet-calipering device, a rockshaft adapted to operate the clutch, a constantly-reciprocating driving-rod operatively connected with the machine and formed with a detent-shoulder, a bar connected with the rock-shaft, a detent pivoted to said bar and adapted to engage the shoulder of the driving-rod, and an electromagnetic trip device under the control of the calipering device and adapted to hold the detent outof engagement with the driving-rod, and a cam-shoulder on the operating-rod adapted to engage the detent and throw it into engagement'with the trip mechanism, substantially as set forth.

' TALBOT O. DEXTER. lVitnesses:

M. V. BIDGOOd,

WM. E. KNIGHT. 

